3. Overhead projector is superior to short circuit TV in a classroom teaching because (a) It is cheap and self devised
(6) Pictures in it may be shown in a desired sequence and with a minimum of lost motion (material) (c) Information presented though it is easily retained
(d) it is easy to use
(6) Pictures in it may be shown in a desired sequence and with a minimum of lost motion (material) (c) Information presented though it is easily retained
(d) it is easy to use